求翻译：根据李运兴英语语篇逻辑性、系统性强，因此上下义词汇项经常出现在同义语篇中，形成连贯的衔接它们各自的类属关系，表明各自的层次和语义。（2001）的分类，把词汇衔接分为同义衔接和组合衔接两类是什么意思？

According to Li Yunxing English discourse logical, systematic, up and down the meaning of vocabulary items often synonymous discourse, the formation of coherent convergence of their respective generic relationship, indicating that the level and semantic. (2001) classification, lexical cohesion is di

According to Lee Heung-English language articles, system of logic, so Up and down the righteous word occurs often synonymous with the article, they form a consistent interface between their respective classes, and the level of their respective semantics. (2001) classification, the term convergence i

According to Li Yunxing English language logic, systematic, therefore about righteousness glossary item appears frequently in synonym, forms coherently links up they respective kind to be the relations, indicates respective level and the semantics.(2001) classification, divides into the glossary eng

Under Li yunxing English discourse logical, systematic, and therefore synonymous words occur frequently in texts, form a coherent linking their generic relationships, their hierarchy and semantics. (2001) category, synonymous combination of cohesion and convergence of lexical cohesion are divided in

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